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Once you have found the information you'd like to use, make sure that you read and understand your sources. You may want to go through and make passages that stood out to you, or that would make good quotes.
Refine your information -- if you find that you have repetitive information in several articles, see if there are chunks of unique information worth saving, or if you need 3 sources that say the exact same thing.
Organize your information to appear in the order that makes sense to your paper -- how do you want this information to flow? Can you answer the Who, What, Where, Why, When, and How questions? Is the instructor requiring specific information be included, or certain questions that must be addressed in the assignment?